Salmon Life Cycle Poster

Salmon Life Cycle Poster by Kristi Bridgeman

Fall and Winter:

  • A male and female Salmon spawn and die, leaving behind essential nutrients
  • Over three thousand eggs incubate knee deep in the gravel beds

Spring:

  • Approximately eight hundred alevin emerge with yolk sacs
  • Coho fry live and grow in the stream for one to two years
  • Chum fry move out to the ocean after one to four weeks
  • Fingerling migrate downstream

Summer:

  • They become smolts and enter the ocean
  • Ten of the original offspring grow to maturity in the ocean.

Autumn:

  • Coho and Chum usually return to their own stream when they are four years old.

Salmon Survival Threats:

  • Stream intruders such as dogs, watershed pollutants such as sewage spills, urban runoff from vehicles, home heating oil leaks, pesticides, spills, and soaps all entering the stream through storm drains.
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